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Wang S, Ma Y, Li W, Zhao Y, Gao Y, Wang S. LncRNA SNHG5/IGF2BP1/Occludin axis regulates Nd 2O 3 induced blood-testis barrier disruption. ENVIRONMENTAL POLLUTION (BARKING, ESSEX : 1987) 2024; 358:124527. [PMID: 38992831 DOI: 10.1016/j.envpol.2024.124527] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/08/2024] [Revised: 05/27/2024] [Accepted: 07/08/2024] [Indexed: 07/13/2024]
Abstract
Neodymium oxide (Nd2O3) is a rare earth element that can lead to various type of tissue and organ damage with prolonged exposure. The long noncoding RNA small nucleolar ribonucleic acid host gene 5 (lncRNA SNHG5) plays a role in disease progressiong. However, its connection with Nd2O3 induced reproductive harm in males has not been thoroughly investigated. Our research discovered that exposure to Nd2O3 increases the expression of SNHG5 in the testes of mice, which in turn binds directly to and reduces in the protein levels of insulin like growth factor 2 mRNA-binding protein 1 (IGF2BP1) both in vivo and in vitro. This process disrupts the cytoskeleton of blood-testis barrier(BTB) by impacting the stability of the tight junction protein Occludin (Ocln) mRNA structure and the permeability of the BTB. In summary, our study elucidates the regulatory mechanism of SNHG5/IGF2BP1/Occludin axis in Nd2O3-induced BTB injury, providing valuable insights for the treatment of male infertility.
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Affiliation(s)
- Shurui Wang
- School of Public Health, Baotou Medical College, Baotou, 014030, Inner Mongolia, PR China
| | - Yupeng Ma
- School of Public Health, Baotou Medical College, Baotou, 014030, Inner Mongolia, PR China
| | - Wenjie Li
- School of Public Health, Baotou Medical College, Baotou, 014030, Inner Mongolia, PR China
| | - Yuhang Zhao
- School of Public Health, Baotou Medical College, Baotou, 014030, Inner Mongolia, PR China
| | - Yanrong Gao
- School of Public Health, Baotou Medical College, Baotou, 014030, Inner Mongolia, PR China
| | - Suhua Wang
- School of Public Health, Baotou Medical College, Baotou, 014030, Inner Mongolia, PR China.
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Liu W, Du L, Li J, He Y, Tang M. Microenvironment of spermatogonial stem cells: a key factor in the regulation of spermatogenesis. Stem Cell Res Ther 2024; 15:294. [PMID: 39256786 PMCID: PMC11389459 DOI: 10.1186/s13287-024-03893-z] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/10/2024] [Accepted: 08/25/2024] [Indexed: 09/12/2024] Open
Abstract
Spermatogonial stem cells (SSCs) play a crucial role in the male reproductive system, responsible for maintaining continuous spermatogenesis. The microenvironment or niche of SSCs is a key factor in regulating their self-renewal, differentiation and spermatogenesis. This microenvironment consists of multiple cell types, extracellular matrix, growth factors, hormones and other molecular signals that interact to form a complex regulatory network. This review aims to provide an overview of the main components of the SSCs microenvironment, explore how they regulate the fate decisions of SSCs, and discuss the potential impact of microenvironmental abnormalities on male reproductive health.
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Affiliation(s)
- Wei Liu
- Department of Pathology, The Affiliated Cancer Hospital of Xiangya School of Medicine, Central South University/Hunan Cancer Hospital, Changsha, China
- Department of Pharmacy, The Third Xiangya Hospital, Central South University, Changsha, China
| | - Li Du
- The Key Laboratory of Model Animals and Stem Cell Biology in Hunan Province, The Engineering Research Center of Reproduction and Translational Medicine of Hunan Province, Hunan Normal University School of Medicine, Changsha, China
| | - Junjun Li
- Department of Pathology, The Affiliated Cancer Hospital of Xiangya School of Medicine, Central South University/Hunan Cancer Hospital, Changsha, China
| | - Yan He
- Department of Pathology, The Affiliated Cancer Hospital of Xiangya School of Medicine, Central South University/Hunan Cancer Hospital, Changsha, China.
| | - Mengjie Tang
- Department of Pathology, The Affiliated Cancer Hospital of Xiangya School of Medicine, Central South University/Hunan Cancer Hospital, Changsha, China.
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Liao Z, Wang J, Xu M, Li X, Xu H. The role of RNA m6A demethylase ALKBH5 in the mechanisms of fibrosis. Front Cell Dev Biol 2024; 12:1447135. [PMID: 39220683 PMCID: PMC11362088 DOI: 10.3389/fcell.2024.1447135] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/25/2024] [Accepted: 08/06/2024] [Indexed: 09/04/2024] Open
Abstract
ALKBH5 is one of the demethylases involved in the regulation of RNA m6A modification. In addition to its role in the dynamic regulation of RNA m6A modification, ALKBH5 has been found to play important roles in various tissues fibrosis processes in recent years. However, the mechanisms and effects of ALKBH5 in fibrosis have been reported inconsistently. Multiple cell types, including parenchymal cells, immune cells (neutrophils and T cells), macrophages, endothelial cells, and fibroblasts, play roles in various stages of fibrosis. Therefore, this review analyzes the mechanisms by which ALKBH5 regulates these cells, its impact on their functions, and the outcomes of fibrosis. Furthermore, this review summarizes the role of ALKBH5 in fibrotic diseases such as pulmonary fibrosis, liver fibrosis, cardiac fibrosis, and renal fibrosis, and discusses various ALKBH5 inhibitors that have been discovered to date, exploring the potential of ALKBH5 as a clinical target for fibrosis.
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Affiliation(s)
| | | | | | - Xiaoyan Li
- Department of Otorhinolaryngology Head and Neck Surgery, Shanghai Children’s Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, China
| | - Hongming Xu
- Department of Otorhinolaryngology Head and Neck Surgery, Shanghai Children’s Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, China
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Ouyang KW, Wang TT, Wang H, Luo YX, Hu YF, Zheng XM, Ling Q, Wang KW, Xiong YW, Zhang J, Chang W, Zhang YF, Yuan Z, Li H, Gao L, Xu DX, Zhu HL, Yang L, Wang H. m6A-methylated Lonp1 drives mitochondrial proteostasis stress to induce testicular pyroptosis upon environmental cadmium exposure. THE SCIENCE OF THE TOTAL ENVIRONMENT 2024; 931:172938. [PMID: 38703850 DOI: 10.1016/j.scitotenv.2024.172938] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/11/2024] [Revised: 04/15/2024] [Accepted: 04/30/2024] [Indexed: 05/06/2024]
Abstract
Cadmium (Cd) is a widely distributed typical environmental pollutant and one of the most toxic heavy metals. It is well-known that environmental Cd causes testicular damage by inducing classic types of cell death such as cell apoptosis and necrosis. However, as a new type of cell death, the role and mechanism of pyroptosis in Cd-induced testicular injury remain unclear. In the current study, we used environmental Cd to generate a murine model with testicular injury and AIM2-dependent pyroptosis. Based on the model, we found that increased cytoplasmic mitochondrial DNA (mtDNA), activated mitochondrial proteostasis stress occurred in Cd-exposed testes. We used ethidium bromide to generate mtDNA-deficient testicular germ cells and further confirmed that increased cytoplasmic mtDNA promoted AIM2-dependent pyroptosis in Cd-exposed cells. Uracil-DNA glycosylase UNG1 overexpression indicated that environmental Cd blocked UNG-dependent repairment of damaged mtDNA to drive the process in which mtDNA releases to cytoplasm in the cells. Interestingly, we found that environmental Cd activated mitochondrial proteostasis stress by up-regulating protein expression of LONP1 in testes. Testicular specific LONP1-knockdown significantly reversed Cd-induced UNG1 protein degradation and AIM2-dependent pyroptosis in mouse testes. In addition, environmental Cd significantly enhanced the m6A modification of Lonp1 mRNA and its stability in testicular germ cells. Knockdown of IGF2BP1, a reader of m6A modification, reversed Cd-induced upregulation of LONP1 protein expression and pyroptosis activation in testicular germ cells. Collectively, environmental Cd induces m6A modification of Lonp1 mRNA to activate mitochondrial proteostasis stress, increase cytoplasmic mtDNA content, and trigger AIM2-dependent pyroptosis in mouse testes. These findings suggest that mitochondrial proteostasis stress is a potential target for the prevention of testicular injury.
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Affiliation(s)
- Kong-Wen Ouyang
- Department of Toxicology, School of Public Health, Anhui Medical University, China; Key Laboratory of Environmental Toxicology of Anhui Higher Education Institutes, China; Center of Prenatal Diagnosis, Wuxi Maternity and Child Health Care Hospital, Affiliated Women's Hospital of Jiangnan University, Wuxi 214000, China
| | - Tian-Tian Wang
- Department of Toxicology, School of Public Health, Anhui Medical University, China; Key Laboratory of Environmental Toxicology of Anhui Higher Education Institutes, China
| | - Hua Wang
- Department of Toxicology, School of Public Health, Anhui Medical University, China; Key Laboratory of Environmental Toxicology of Anhui Higher Education Institutes, China; Department of Respiratory Medicine, Anhui Provincial Children's Hospital, Hefei, Anhui 230000, China
| | - Ye-Xin Luo
- Department of Toxicology, School of Public Health, Anhui Medical University, China; Key Laboratory of Environmental Toxicology of Anhui Higher Education Institutes, China
| | - Yi-Fan Hu
- Department of Toxicology, School of Public Health, Anhui Medical University, China; Key Laboratory of Environmental Toxicology of Anhui Higher Education Institutes, China
| | - Xin-Mei Zheng
- Department of Toxicology, School of Public Health, Anhui Medical University, China; Key Laboratory of Environmental Toxicology of Anhui Higher Education Institutes, China
| | - Qing Ling
- Department of Toxicology, School of Public Health, Anhui Medical University, China; Key Laboratory of Environmental Toxicology of Anhui Higher Education Institutes, China
| | - Kai-Wen Wang
- Department of Toxicology, School of Public Health, Anhui Medical University, China; Key Laboratory of Environmental Toxicology of Anhui Higher Education Institutes, China
| | - Yong-Wei Xiong
- Department of Toxicology, School of Public Health, Anhui Medical University, China; Key Laboratory of Environmental Toxicology of Anhui Higher Education Institutes, China; Key Laboratory of Population Health Across Life Cycle (Anhui Medical University), Ministry of Education of The People's Republic of China, No 81 Meishan Road, Hefei 230032, Anhui, China
| | - Jin Zhang
- Department of Toxicology, School of Public Health, Anhui Medical University, China; Key Laboratory of Environmental Toxicology of Anhui Higher Education Institutes, China
| | - Wei Chang
- Department of Toxicology, School of Public Health, Anhui Medical University, China; Key Laboratory of Environmental Toxicology of Anhui Higher Education Institutes, China
| | - Yu-Feng Zhang
- Department of Toxicology, School of Public Health, Anhui Medical University, China; Key Laboratory of Environmental Toxicology of Anhui Higher Education Institutes, China
| | - Zhi Yuan
- Department of Toxicology, School of Public Health, Anhui Medical University, China; Key Laboratory of Environmental Toxicology of Anhui Higher Education Institutes, China
| | - Hao Li
- Department of Toxicology, School of Public Health, Anhui Medical University, China; Key Laboratory of Environmental Toxicology of Anhui Higher Education Institutes, China
| | - Lan Gao
- Department of Toxicology, School of Public Health, Anhui Medical University, China; Key Laboratory of Environmental Toxicology of Anhui Higher Education Institutes, China; Key Laboratory of Population Health Across Life Cycle (Anhui Medical University), Ministry of Education of The People's Republic of China, No 81 Meishan Road, Hefei 230032, Anhui, China
| | - De-Xiang Xu
- Department of Toxicology, School of Public Health, Anhui Medical University, China; Key Laboratory of Environmental Toxicology of Anhui Higher Education Institutes, China; Key Laboratory of Population Health Across Life Cycle (Anhui Medical University), Ministry of Education of The People's Republic of China, No 81 Meishan Road, Hefei 230032, Anhui, China
| | - Hua-Long Zhu
- Department of Toxicology, School of Public Health, Anhui Medical University, China; Key Laboratory of Environmental Toxicology of Anhui Higher Education Institutes, China; Key Laboratory of Population Health Across Life Cycle (Anhui Medical University), Ministry of Education of The People's Republic of China, No 81 Meishan Road, Hefei 230032, Anhui, China.
| | - Lan Yang
- Department of Toxicology, School of Public Health, Anhui Medical University, China; Center of Prenatal Diagnosis, Wuxi Maternity and Child Health Care Hospital, Affiliated Women's Hospital of Jiangnan University, Wuxi 214000, China.
| | - Hua Wang
- Department of Toxicology, School of Public Health, Anhui Medical University, China; Key Laboratory of Environmental Toxicology of Anhui Higher Education Institutes, China; Key Laboratory of Population Health Across Life Cycle (Anhui Medical University), Ministry of Education of The People's Republic of China, No 81 Meishan Road, Hefei 230032, Anhui, China.
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Lv L, Wei Q, Zhang J, Dong Y, Shan Z, Chang N, Zhao Y, Bian P, Yi Q. IGF2BP3 prevent HMGB1 mRNA decay in bladder cancer and development. Cell Mol Biol Lett 2024; 29:39. [PMID: 38504159 PMCID: PMC10949762 DOI: 10.1186/s11658-024-00545-1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/20/2023] [Accepted: 02/05/2024] [Indexed: 03/21/2024] Open
Abstract
BACKGROUND IGF2BP3 functions as an RNA-binding protein (RBP) and plays a role in the posttranscriptional control of mRNA localization, stability, and translation. Its dysregulation is frequently associated with tumorigenesis across various cancer types. Nonetheless, our understanding of how the expression of the IGF2BP3 gene is regulated remains limited. The specific functions and underlying mechanisms of IGF2BP3, as well as the potential benefits of targeting it for therapeutic purposes in bladder cancer, are not yet well comprehended. METHODS The mRNA and protein expression were examined by RT-qPCR and western blotting, respectively. The methylation level of CpG sites was detected by Bisulfite sequencing PCR (BSP). The regulation of IGF2BP3 expression by miR-320a-3p was analyzed by luciferase reporter assay. The functional role of IGF2BP3 was determined through proliferation, colony formation, wound healing, invasion assays, and xenograft mouse model. The regulation of HMGB1 by IGF2BP3 was investigated by RNA immunoprecipitation (RIP) and mRNA stability assays. RESULTS We observed a significant elevation in IGF2BP3 levels within bladder cancer samples, correlating with more advanced stages and grades, as well as an unfavorable prognosis. Subsequent investigations revealed that the upregulation of IGF2BP3 expression is triggered by copy number gain/amplification and promoter hypomethylation in various tumor types, including bladder cancer. Furthermore, miR-320a-3p was identified as another negative regulator in bladder cancer. Functionally, the upregulation of IGF2BP3 expression exacerbated bladder cancer progression, including the proliferation, migration, and invasion of bladder cancer. Conversely, IGF2BP3 silencing produced the opposite effects. Moreover, IGF2BP3 expression positively correlated with inflammation and immune infiltration in bladder cancer. Mechanistically, IGF2BP3 enhanced mRNA stability and promoted the expression of HMGB1 by binding to its mRNA, which is a factor that promotes inflammation and orchestrates tumorigenesis in many cancers. Importantly, pharmacological inhibition of HMGB1 with glycyrrhizin, a specific HMGB1 inhibitor, effectively reversed the cancer-promoting effects of IGF2BP3 overexpression in bladder cancer. Furthermore, the relationship between HMGB1 mRNA and IGF2PB3 is also observed in mammalian embryonic development, with the expression of both genes gradually decreasing as embryonic development progresses. CONCLUSIONS Our present study sheds light on the genetic and epigenetic mechanisms governing IGF2BP3 expression, underscoring the critical involvement of the IGF2BP3-HMGB1 axis in driving bladder cancer progression. Additionally, it advocates for the investigation of inhibiting IGF2BP3-HMGB1 as a viable therapeutic approach for treating bladder cancer.
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Affiliation(s)
- Lei Lv
- Department of Cancer Epigenetics Program, Anhui Cancer Hospital, The First Affiliated Hospital of USTC, Division of Life Sciences and Medicine, University of Science and Technology of China, Hefei, 230031, Anhui, China
| | - Qinqin Wei
- Institute of Radiation Medicine, School of Basic Medical Sciences, Anhui Medical University, Hefei, 230032, Anhui, China
| | - Jianxiao Zhang
- Medical Consulting Center, Hebei Children's Hospital, Shijiazhuang, 050030, Hebei, China
| | - Yitong Dong
- Institute of Radiation Medicine, School of Basic Medical Sciences, Anhui Medical University, Hefei, 230032, Anhui, China
| | - Zhenglei Shan
- The Second Clinical College, Anhui Medical University, Hefei, 230032, Anhui, China
| | - Na Chang
- Department of Radiation Oncology, The First Affiliated Hospital of USTC, Division of Life Sciences and Medicine, University of Science and Technology of China, Hefei, 230031, Anhui, People's Republic of China
| | - Ye Zhao
- Institute of Radiation Medicine, School of Basic Medical Sciences, Anhui Medical University, Hefei, 230032, Anhui, China.
| | - Po Bian
- Institute of Radiation Medicine, School of Basic Medical Sciences, Anhui Medical University, Hefei, 230032, Anhui, China.
| | - Qiyi Yi
- Institute of Radiation Medicine, School of Basic Medical Sciences, Anhui Medical University, Hefei, 230032, Anhui, China.
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Cai Z, Zhang Y, Yang L, Ma C, Fei Y, Ding J, Song W, Tong WM, Niu Y, Li H. Correction: ALKBH5 in mouse testicular Sertoli cells regulates Cdh2 mRNA translation to maintain blood-testis barrier integrity. Cell Mol Biol Lett 2024; 29:16. [PMID: 38238691 PMCID: PMC10797865 DOI: 10.1186/s11658-024-00534-4] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/22/2024] Open
Affiliation(s)
- Zhonglin Cai
- Department of Urology, Peking Union Medical College Hospital, Chinese Academy of Medical Sciences & Peking Union Medical College, Beijing, China
- Department of Pathology, Institute of Basic Medical Sciences Chinese Academy of Medical Sciences, School of Basic Medicine Peking Union Medical College, Beijing, China
- Department of Urology, Shanghai Ninth People's Hospital, Shanghai Jiaotong University School of Medicine, Shanghai, China
| | - Yao Zhang
- Department of Pathology, Institute of Basic Medical Sciences Chinese Academy of Medical Sciences, School of Basic Medicine Peking Union Medical College, Beijing, China
| | - Lin Yang
- Department of Pathology, Institute of Basic Medical Sciences Chinese Academy of Medical Sciences, School of Basic Medicine Peking Union Medical College, Beijing, China
| | - Chunhui Ma
- Department of Pathology, Institute of Basic Medical Sciences Chinese Academy of Medical Sciences, School of Basic Medicine Peking Union Medical College, Beijing, China
| | - Yi Fei
- Department of Pathology, Institute of Basic Medical Sciences Chinese Academy of Medical Sciences, School of Basic Medicine Peking Union Medical College, Beijing, China
| | - Jing Ding
- Department of Pathology, Institute of Basic Medical Sciences Chinese Academy of Medical Sciences, School of Basic Medicine Peking Union Medical College, Beijing, China
| | - Wei Song
- Department of Biochemistry and Molecular Biology, State Key Laboratory of Medical Molecular Biology, Institute of Basic Medical Sciences Chinese Academy of Medical Sciences, School of Basic Medicine Peking Union Medical College, Beijing, China
| | - Wei-Min Tong
- Department of Pathology, Institute of Basic Medical Sciences Chinese Academy of Medical Sciences, School of Basic Medicine Peking Union Medical College, Beijing, China.
- Molecular Pathology Research Center, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, China.
| | - Yamei Niu
- Department of Pathology, Institute of Basic Medical Sciences Chinese Academy of Medical Sciences, School of Basic Medicine Peking Union Medical College, Beijing, China.
- Molecular Pathology Research Center, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, China.
| | - Hongjun Li
- Department of Urology, Peking Union Medical College Hospital, Chinese Academy of Medical Sciences & Peking Union Medical College, Beijing, China.
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Wei H, Huang L, Lu Q, Huang Z, Huang Y, Xu Z, Li W, Pu J. N 6-Methyladenosine-Modified LEAWBIH Drives Hepatocellular Carcinoma Progression through Epigenetically Activating Wnt/β-Catenin Signaling. J Hepatocell Carcinoma 2023; 10:1991-2007. [PMID: 37954496 PMCID: PMC10637240 DOI: 10.2147/jhc.s433070] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/30/2023] [Accepted: 10/18/2023] [Indexed: 11/14/2023] Open
Abstract
Purpose N6-methyladenosine (m6A) modification plays an important role in regulating RNA maturation, stability, and translation. Thus, m6A modification is involved in various pathophysiological processes including hepatocellular carcinoma (HCC). However, the direct contribution of m6A modifications to RNA function in HCC remains unclear. Here, we identified LEAWBIH (long non-coding RNA epigenetically activating Wnt/β-catenin signalling in HCC) as an m6A-modified long non-coding RNA (lncRNA) and investigated the effects of m6A on the function of LEAWBIH in HCC. Methods Quantitative polymerase chain reaction was performed to measure the gene expression in tissues and cells. The level of m6A modification was detected using a methylated RNA immunoprecipitation assay and single-base elongation- and ligation-based qPCR amplification method. Cell proliferation was evaluated using the Glo cell viability and CCK-8 assays. Cell migration and invasion were evaluated using Transwell migration and invasion assays. The mechanisms of m6A modified LEAWBIH were investigated using chromatin isolation by RNA purification, chromatin immunoprecipitation, and dual-luciferase reporter assays. Results LEAWBIH was highly expressed and correlated with poor survival in HCC patients. LEAWBIH was identified as a m6A-modified transcript. m6A modification increased LEAWBIH transcript stability. The m6A modification level of LEAWBIH was increased in HCC, and a high m6A modification level of LEAWBIH predicted poor survival. LEAWBIH promotes HCC cell proliferation, migration, and invasion in an m6A modification-dependent manner. Mechanistic investigations revealed that m6A-modified LEAWBIH activated Wnt/β-catenin signaling. m6A-modified LEAWBIH binds to the m6A reader YTHDC1, which further interacts with and recruits H3K9me2 demethylase KDM3B to CTNNB1 promoter, leading to H3K9me2 demethylation and CTNNB1 transcription activation. Functional rescue assays showed that blocking Wnt/β-catenin signaling abolished the role of LEAWBIH in HCC. Conclusion m6A-modified LEAWBIH exerts oncogenic effects in HCC by epigenetically activating Wnt/β-catenin signaling, highlighting m6A-modified LEAWBIH as a promising therapeutic target for HCC.
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Affiliation(s)
- Huamei Wei
- Department of Pathology, Affiliated Hospital of Youjiang Medical University for Nationalities, Baise, People’s Republic of China
| | - Lizheng Huang
- Graduate College of Youjiang Medical University for Nationalities, Baise, People’s Republic of China
| | - Qi Lu
- Graduate College of Youjiang Medical University for Nationalities, Baise, People’s Republic of China
| | - Zheng Huang
- Graduate College of Youjiang Medical University for Nationalities, Baise, People’s Republic of China
| | - Yanyan Huang
- Graduate College of Youjiang Medical University for Nationalities, Baise, People’s Republic of China
| | - Zuoming Xu
- Department of Hepatobiliary Surgery, Affiliated Hospital of Youjiang Medical University for Nationalities, Baise, People’s Republic of China
| | - Wenchuan Li
- Department of Hepatobiliary Surgery, Affiliated Hospital of Youjiang Medical University for Nationalities, Baise, People’s Republic of China
| | - Jian Pu
- Department of Hepatobiliary Surgery, Affiliated Hospital of Youjiang Medical University for Nationalities, Baise, People’s Republic of China
- Guangxi Clinical Medical Research Center of Hepatobiliary Disease, Baise, People’s Republic of China
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Chen C, Tang X, Yan S, Yang A, Xiang J, Deng Y, Yin Y, Chen B, Gu J. Comprehensive Analysis of the Transcriptome-Wide m 6A Methylome in Shaziling Pig Testicular Development. Int J Mol Sci 2023; 24:14475. [PMID: 37833923 PMCID: PMC10572705 DOI: 10.3390/ijms241914475] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/24/2023] [Revised: 09/18/2023] [Accepted: 09/21/2023] [Indexed: 10/15/2023] Open
Abstract
RNA N6-methyladenosine (m6A) modification is one of the principal post-transcriptional modifications and plays a dynamic role in testicular development and spermatogenesis. However, the role of m6A in porcine testis is understudied. Here, we performed a comprehensive analysis of the m6A transcriptome-wide profile in Shaziling pig testes at birth, puberty, and maturity. We analyzed the total transcriptome m6A profile and found that the m6A patterns were highly distinct in terms of the modification of the transcriptomes during porcine testis development. We found that key m6A methylated genes (AURKC, OVOL, SOX8, ACVR2A, and SPATA46) were highly enriched during spermatogenesis and identified in spermatogenesis-related KEGG pathways, including Wnt, cAMP, mTOR, AMPK, PI3K-Akt, and spliceosome. Our findings indicated that m6A methylations are involved in the complex yet well-organized post-transcriptional regulation of porcine testicular development and spermatogenesis. We found that the m6A eraser ALKBH5 negatively regulated the proliferation of immature porcine Sertoli cells. Furthermore, we proposed a novel mechanism of m6A modification during testicular development: ALKBH5 regulated the RNA methylation level and gene expression of SOX9 mRNA. In addition to serving as a potential target for improving boar reproduction, our findings contributed to the further understanding of the regulation of m6A modifications in male reproduction.
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Affiliation(s)
- Chujie Chen
- College of Animal Science and Technology, Hunan Agricultural University, Changsha 410128, China; (C.C.); (X.T.); (S.Y.); (A.Y.); (J.X.); (Y.D.); (Y.Y.)
- Hunan Provincial Key Laboratory for Genetic Improvement of Domestic Animal, Hunan Agricultural University, Changsha 410128, China
| | - Xiangwei Tang
- College of Animal Science and Technology, Hunan Agricultural University, Changsha 410128, China; (C.C.); (X.T.); (S.Y.); (A.Y.); (J.X.); (Y.D.); (Y.Y.)
- Hunan Provincial Key Laboratory for Genetic Improvement of Domestic Animal, Hunan Agricultural University, Changsha 410128, China
| | - Saina Yan
- College of Animal Science and Technology, Hunan Agricultural University, Changsha 410128, China; (C.C.); (X.T.); (S.Y.); (A.Y.); (J.X.); (Y.D.); (Y.Y.)
- Hunan Provincial Key Laboratory for Genetic Improvement of Domestic Animal, Hunan Agricultural University, Changsha 410128, China
| | - Anqi Yang
- College of Animal Science and Technology, Hunan Agricultural University, Changsha 410128, China; (C.C.); (X.T.); (S.Y.); (A.Y.); (J.X.); (Y.D.); (Y.Y.)
- Hunan Provincial Key Laboratory for Genetic Improvement of Domestic Animal, Hunan Agricultural University, Changsha 410128, China
| | - Jiaojiao Xiang
- College of Animal Science and Technology, Hunan Agricultural University, Changsha 410128, China; (C.C.); (X.T.); (S.Y.); (A.Y.); (J.X.); (Y.D.); (Y.Y.)
- Hunan Provincial Key Laboratory for Genetic Improvement of Domestic Animal, Hunan Agricultural University, Changsha 410128, China
| | - Yanhong Deng
- College of Animal Science and Technology, Hunan Agricultural University, Changsha 410128, China; (C.C.); (X.T.); (S.Y.); (A.Y.); (J.X.); (Y.D.); (Y.Y.)
- Hunan Provincial Key Laboratory for Genetic Improvement of Domestic Animal, Hunan Agricultural University, Changsha 410128, China
| | - Yulong Yin
- College of Animal Science and Technology, Hunan Agricultural University, Changsha 410128, China; (C.C.); (X.T.); (S.Y.); (A.Y.); (J.X.); (Y.D.); (Y.Y.)
- Key Laboratory of Agro-Ecological Processes in Subtropical Region, Institute of Subtropical Agriculture, Chinese Academy of Sciences, Changsha 410125, China
| | - Bin Chen
- College of Animal Science and Technology, Hunan Agricultural University, Changsha 410128, China; (C.C.); (X.T.); (S.Y.); (A.Y.); (J.X.); (Y.D.); (Y.Y.)
- Hunan Provincial Key Laboratory for Genetic Improvement of Domestic Animal, Hunan Agricultural University, Changsha 410128, China
| | - Jingjing Gu
- College of Animal Science and Technology, Hunan Agricultural University, Changsha 410128, China; (C.C.); (X.T.); (S.Y.); (A.Y.); (J.X.); (Y.D.); (Y.Y.)
- Hunan Provincial Key Laboratory for Genetic Improvement of Domestic Animal, Hunan Agricultural University, Changsha 410128, China
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Meng X, Li W, Wu Q, Gao Y, Zhang L. Microcystin-LR induces lactate production disruption via altering the m 6A modification in Sertoli cells. ECOTOXICOLOGY AND ENVIRONMENTAL SAFETY 2023; 263:115288. [PMID: 37481861 DOI: 10.1016/j.ecoenv.2023.115288] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/06/2023] [Revised: 07/15/2023] [Accepted: 07/19/2023] [Indexed: 07/25/2023]
Abstract
We have previously reported the toxicity of microcystin-LR (MC-LR) to the male reproductive system, which results in functional changes in mouse testes. In this study, mice were orally exposed to MC-LR at 1, 7.5, 15, or 30 μg/L daily for 180 days. We found an increase in germ cell apoptosis in the seminiferous tubules and low-quality sperm in the epididymis. A decrease in lactate dehydrogenase A (Ldha) expression in testes through high-throughput sequencing was observed. We validated that MC-LR disrupted lactate production in Sertoli cells by suppressing the expression of Ldha. Further studies identified that methyltransferase 3 (Mettl3) catalysed N6-methyladenosine (m6A) methylation of Ldha mRNA. Mettl3 was downregulated in Sertoli cells following exposure to MC-LR, decreasing m6A levels of Ldha. The stability of Ldha mRNA decreased when m6A levels of Ldha were inhibited. In conclusion, these results showed that MC-LR inhibits the expression of Ldha in an m6A-dependent manner, which might result in the apoptosis of spermatogenic cells and a decline in sperm quality. Our work provides a new perspective to understanding MC-LR-induced male infertility.
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Affiliation(s)
- Xiannan Meng
- Cancer Institute, Xuzhou Medical University, 209 Tongshan Road, Xuzhou, Jiangsu 221004, China
| | - Wenju Li
- Department of Tropical Medicine and Infectious Diseases, Hainan Hospital, The Chinese PLA General Hospital, Sanya, Hainan, China
| | - Qingxuan Wu
- Cancer Institute, Xuzhou Medical University, 209 Tongshan Road, Xuzhou, Jiangsu 221004, China
| | - Yue Gao
- Cancer Institute, Xuzhou Medical University, 209 Tongshan Road, Xuzhou, Jiangsu 221004, China
| | - Ling Zhang
- Cancer Institute, Xuzhou Medical University, 209 Tongshan Road, Xuzhou, Jiangsu 221004, China; Department of Histology and Embryology, Basic Medical College, Xuzhou Medical University, 209 Tongshan Road, Xuzhou, Jiangsu 221004, China.
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10
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Tan C, Huang Y, Huang Z, Ning Y, Huang L, Wu X, Lu Y, Wei H, Pu J. N 6-Methyladenosine-Modified ATP8B1-AS1 Exerts Oncogenic Roles in Hepatocellular Carcinoma via Epigenetically Activating MYC. J Hepatocell Carcinoma 2023; 10:1479-1495. [PMID: 37701563 PMCID: PMC10493143 DOI: 10.2147/jhc.s415318] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/01/2023] [Accepted: 07/06/2023] [Indexed: 09/14/2023] Open
Abstract
Purpose N6-methyladenosine (m6A) modification has shown critical roles in regulating mRNA fate. Non-coding RNAs also have important roles in various diseases, including hepatocellular carcinoma (HCC). However, the potential influences of m6A modification on non-coding RNAs are still unclear. In this study, we identified a novel m6A-modified ATP8B1-AS1 and aimed to investigate the effects of m6A on the expression and role of ATP8B1-AS1 in HCC. Methods qPCR was performed to measure the expression of related genes. The correlation between gene expression and prognosis was analyzed using public database. m6A modification level was measured using MeRIP and single-base elongation- and ligation-based qPCR amplification method. The roles of ATP8B1-AS1 in HCC were investigated using in vitro and in vivo functional assays. The mechanisms underlying the roles of ATP8B1-AS1 were investigated by ChIRP and ChIP assays. Results ATP8B1-AS1 is highly expressed in HCC tissues and cell lines. High expression of ATP8B1-AS1 is correlated with poor overall survival of HCC patients. ATP8B1-AS1 is m6A modified and the 792 site of ATP8B1-AS1 is identified as an m6A modification site. m6A modification increases the stability of ATP8B1-AS1 transcript. m6A modification level of ATP8B1-AS1 is increased in HCC tissues and cell lines, and correlated with poor overall survival of HCC patients. ATP8B1-AS1 promotes HCC cell proliferation, migration, and invasion, which were abolished by the mutation of m6A-modified 792 site. Mechanistic investigation revealed that m6A-modified ATP8B1-AS1 interacts with and recruits m6A reader YTHDC1 and histone demethylase KDM3B to MYC promoter region, leading to the reduction of H3K9me2 level at MYC promoter region and activation of MYC transcription. Functional rescue assays showed that depletion of MYC largely abolished the oncogenic roles of ATP8B1-AS1. Conclusion m6A modification level of ATP8B1-AS1 is increased and correlated with poor prognosis in HCC. m6A-modified ATP8B1-AS1 exerts oncogenic roles in HCC via epigenetically activating MYC expression.
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Affiliation(s)
- Chuan Tan
- Department of Hepatobiliary Surgery, Affiliated Hospital of Youjiang Medical University for Nationalities, Baise, People’s Republic of China
| | - Yanyan Huang
- Graduate College of Youjiang Medical University for Nationalities, Baise, People’s Republic of China
| | - Zheng Huang
- Graduate College of Youjiang Medical University for Nationalities, Baise, People’s Republic of China
| | - Yuanjia Ning
- Graduate College of Youjiang Medical University for Nationalities, Baise, People’s Republic of China
| | - Lizheng Huang
- Graduate College of Youjiang Medical University for Nationalities, Baise, People’s Republic of China
| | - Xianjian Wu
- Department of Hepatobiliary Surgery, Affiliated Hospital of Youjiang Medical University for Nationalities, Baise, People’s Republic of China
| | - Yuan Lu
- Department of Hepatobiliary Surgery, Affiliated Hospital of Youjiang Medical University for Nationalities, Baise, People’s Republic of China
| | - Huamei Wei
- Department of Pathology, Affiliated Hospital of Youjiang Medical University for Nationalities, Baise, People’s Republic of China
| | - Jian Pu
- Department of Hepatobiliary Surgery, Affiliated Hospital of Youjiang Medical University for Nationalities, Baise, People’s Republic of China
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Chen X, Lu T, Cai Y, Han Y, Ding M, Chu Y, Zhou X, Wang X. KIAA1429-mediated m6A modification of CHST11 promotes progression of diffuse large B-cell lymphoma by regulating Hippo-YAP pathway. Cell Mol Biol Lett 2023; 28:32. [PMID: 37076815 PMCID: PMC10114474 DOI: 10.1186/s11658-023-00445-w] [Citation(s) in RCA: 9] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/10/2022] [Accepted: 03/30/2023] [Indexed: 04/21/2023] Open
Abstract
BACKGROUND N6-methyladenosine (m6A) has been shown to participate in various essential biological processes by regulating the level of target genes. However, the function of m6A modification mediated by KIAA1429 [alias virus-like m6A methyltransferase-associated protein (VIRMA)] during the progression of diffuse large B-cell lymphoma (DLBCL) remains undefined. METHODS The expression and clinical significance of KIAA1429 were verified by our clinical data. CRISPR/Cas9 mediated KIAA1429 deletion, and CRISPR/dCas9-VP64 for activating endogenous KIAA1429 was used to evaluate its biological function. RNA sequencing (RNA-seq), methylated RNA immunoprecipitation sequencing (MeRIP-seq), RNA immunoprecipitation (RIP) assays, luciferase activity assay, RNA stability experiments, and co-immunoprecipitation were performed to investigate the regulatory mechanism of KIAA1429 in DLBCL. Tumor xenograft models were established for in vivo experiments. RESULTS Dysregulated expression of m6A regulators was observed, and a novel predictive model based on m6A score was established in DLBCL. Additionally, elevated KIAA1429 expression was associated with poor prognosis of patients with DLBCL. Knockout of KIAA1429 repressed DLBCL cell proliferation, facilitated cell cycle arrest in the G2/M phase, induced apoptosis in vitro, and inhibited tumor growth in vivo. Furthermore, carbohydrate sulfotransferase 11 (CHST11) was identified as a downstream target of KIAA1429, which mediated m6A modification of CHST11 mRNA and then recruited YTHDF2 for reducing CHST11 stability and expression. Inhibition of CHST11 diminished MOB1B expression, resulting in inactivation of Hippo-YAP signaling, reprogramming the expression of Hippo target genes. CONCLUSIONS Our results revealed a new mechanism by which the Hippo-YAP pathway in DLBCL is inactivated by KIAA1429/YTHDF2-coupled epitranscriptional repression of CHST11, highlighting the potential of KIAA1429 as a novel predictive biomarker and therapeutic target for DLBCL progression.
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Affiliation(s)
- Xiaomin Chen
- Department of Hematology, Shandong Provincial Hospital, Shandong University, No.324, Jingwu Road, Jinan, 250021, Shandong, China
| | - Tiange Lu
- Department of Hematology, Shandong Provincial Hospital, Shandong University, No.324, Jingwu Road, Jinan, 250021, Shandong, China
| | - Yiqing Cai
- Department of Hematology, Shandong Provincial Hospital, Shandong University, No.324, Jingwu Road, Jinan, 250021, Shandong, China
| | - Yang Han
- Department of Hematology, Shandong Provincial Hospital Affiliated to Shandong First Medical University, Jinan, 250021, Shandong, China
| | - Mengfei Ding
- Department of Hematology, Shandong Provincial Hospital, Shandong University, No.324, Jingwu Road, Jinan, 250021, Shandong, China
| | - Yurou Chu
- Department of Hematology, Shandong Provincial Hospital, Shandong University, No.324, Jingwu Road, Jinan, 250021, Shandong, China
| | - Xiangxiang Zhou
- Department of Hematology, Shandong Provincial Hospital, Shandong University, No.324, Jingwu Road, Jinan, 250021, Shandong, China.
- Department of Hematology, Shandong Provincial Hospital Affiliated to Shandong First Medical University, Jinan, 250021, Shandong, China.
- Shandong Provincial Engineering Research Center of Lymphoma, Jinan, 250021, Shandong, China.
- Branch of National Clinical Research Center for Hematologic Diseases, Jinan, 250021, Shandong, China.
- National Clinical Research Center for Hematologic Diseases, The First Affiliated Hospital of Soochow University, Suzhou, 251006, China.
| | - Xin Wang
- Department of Hematology, Shandong Provincial Hospital, Shandong University, No.324, Jingwu Road, Jinan, 250021, Shandong, China.
- Department of Hematology, Shandong Provincial Hospital Affiliated to Shandong First Medical University, Jinan, 250021, Shandong, China.
- Shandong Provincial Engineering Research Center of Lymphoma, Jinan, 250021, Shandong, China.
- Branch of National Clinical Research Center for Hematologic Diseases, Jinan, 250021, Shandong, China.
- National Clinical Research Center for Hematologic Diseases, The First Affiliated Hospital of Soochow University, Suzhou, 251006, China.
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